• Code: 1820
• Description: Side paper feeder communication error
  A communication error from paper feeder is detected 10 times in succession.
• Causes: Improper installation side paper feeder.
  Defective connector cable or poor contact in the connector.
  Defective engine PWB.
  Defective SM main PWB.
  Defective PF main PWB.
• Remedy: Improper installation side paper feeder. Follow installation instruction carefully again.
  Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF main PWB (YC13) and SM main PWB (YC4) SM main PWB (YC1) and engine PWB (YC19)
  Defective engine PWB. Replace the engine PWB and check for correct operation.
  Defective SM main PWB. Replace the SM main PWB (Refer to the service manual for the paper feeder).
  Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1900
• Description: Paper feeder EEPROM error
  When writing the data, read and write data does not match 3 times in succession.
• Causes: Defective PF main PWB.
  Device damage of EEPROM.
• Remedy: Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  Device damage of EEPROM. Contact the Service Administrative Division.

• Code: 1910
• Description: Side multi tray EEPROM error
  When writing the data, read and write data does not match 3 times in succession.
• Causes: Defective SM main PWB.
  Device damage of EEPROM.
• Remedy: Defective SM main PWB. Replace the SM main PWB (Refer to the service manual for the paper feeder).
  Device damage of EEPROM. Contact the Service Administrative Division.

• Code: 1920
• Description: Side paper feeder EEPROM error
  When writing the data, read and write data does not match 3 times in succession.
• Causes: Defective PF main PWB.
  Device damage of EEPROM.
• Remedy: Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  Device damage of EEPROM. Contact the Service Administrative Division.

• Code: 1950
• Description: Transfer belt unit EEPROM error
  No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated 5 times successively. Mismatch of reading data from 2 locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
• Causes: Defective connector cable or poor contact in the connector.
  Defective transfer belt unit.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Transfer belt unit and engine PWB (YC3)
  Defective transfer belt unit. Replace the transfer belt unit and check for correct operation.

• Code: 2101
• Description: Developer motor K error
  After developer motor K is driven, the ready signal does not turn to L within 5 s. After developer motor K is stabilized, the ready signal is at the H level for 5 s continuously.
• Causes: Defective connector cable or poor contact in the connector.
  Defective drive transmission system of motor.
  Defective developer motor K.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer motor K and motor control PWB (YC7) Motor control PWB (YC3) and engine PWB (YC9)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective developer motor K. Replace the developer motor K.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2102
• Description: Developer motor C error
  After developer motor C is driven, the ready signal does not turn to L within 5 s. After developer motor C is stabilized, the ready signal is at the H level for 5 s continuously.
• Causes: Defective connector cable or poor contact in the connector.
  Defective drive transmission system of motor.
  Defective developer motor C.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer motor C and motor control PWB (YC6) Motor control PWB (YC3) and engine PWB (YC9)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective developer motor C. Replace the developer motor C.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2103
• Description: Developer motor M error
  After developer motor M is driven, the ready signal does not turn to L within 5 s. After developer motor M is stabilized, the ready signal is at the H level for 5 s continuously.
• Causes: Defective connector cable or poor contact in the connector.
  Defective drive transmission system of motor.
  Defective developer motor M.
  Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer motor M and motor control PWB (YC7) Motor control PWB (YC3) and engine PWB (YC9)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective developer motor M. Replace the developer motor M.
  Defective engine PWB. Replace the engine PWB and check for correct operation.